Stamping device



March 31, 1931. M. 'BRUGIERE STAMPING DEVICE Filed Sept. 4, 1928 mT/zencs 75 at fendfalz yin? Patentel l t-far. 31 1931 ICE MABCEL BEUGZL EBE, 01E THIEBS, FRANCE STAMPING DEVICE Application filed September 4, 1928, Serial lq'c. 303,528, and in France September 10, 1927.

My invention relates to improvements in machines for marking articles of cutlery and the like, for marking a series of non-uniform pieces and has for aparticular object an im- 5 proved roller or sector carrying on its periphery having a smooth surface, the exact relief of the mark, engraving or stamping to be obtained.

Up to the present, the rollers employed for obtaining this result have been shaped in such fashion that only the projections of the mark reach the object or member to be stamped. It follows therefore, if the surface of the object is not rigorously parallel to the developed plane of the periphery of the roller, that the marking does not take place under desirable conditions and the imprint is deeper on one side than on the other if the objects which are successively subjected to the marking operation are not rigorously of the same shape and dimensions. Furthermore, during rotation of the roller and in tr e case of continuous pressure, the relief the engraving penetrates to agreater or less extent in the member to be marked, depenoing upon the number of points reaching tangential lines.

These disadvantages are eliminated by means of my improved die or sector which forms the object of this invention, which a llows obtaining perfect uniformity of the mark in such wise that its smooth part forms, itself, a supporting table and bears clear down on the object to be mark d. 'lhe use of said die is conjugated with a ball and socket F3 support on which bears the object to be marked. The said ball support is necessary for obtaining uniform marking independently of the inclination of the plane of the article to be marked. The support oscillates automatically therefore its bed in accordance with the conicalness or declivity of the object. The table carrying the die allows establishment of equilibrium of forces which X becomes broken when the points carrying the design of the mark to be reproduced become more numerous either to the left or to the right of the axis of the oscillating support.

It is to be noticed that the design engraved does not have to be symmetrical to obtain a good marking, that is to say, that the force an to which must be exerted on one side of the line can be greater or less than the force which must act on the other side.

The three members, that is to say, the die, the object and its oscillating support form, at the moment pressure is exerted by the machine, a perfectly balanced arrangement of such a character that the marking is as accurate as possible and produces an artistic character which has not been able to be obtained by means employed heretofore. The full parts of the engraving in relief can be made deeper than the thin parts in order to obtain on the object a perfect engraving and no defrmation takes place during penetration as is produced with rollers now employed.

In rollers now in use, the exact design of the mark is disposed along the largest radius, which means that when the roller is given a partial movement of rotation under. the action of strong pressure, it is impossible to obtain regularity in the engraving. Conversely, according to my invention, the exact design is placed in a way to lie parallel to a tangent of the table along a radius hereinafter referred to in detail. By the term table is meant the surface of the sector of the die on which is engraved in relief the design. The saiddesign is therefore not placed along the greatest radius, but in a way that its various raised 0 points lie parallel to a tangent to said radius.

The invention will be more readily understood with reference to the accompanying drawing when taken in connection with the following description forming part of this specification.

In the drawing Fig. 1 is a perspective View illustrating the support of the machine on which is placed 0 the object to be marked; and

Fig. 2 is a View of the die sector carrying in relief the engraving of a mark which is destined to be impressed by pressure on the blade of a knife.

As shown in Fig. 1, the sector roller 1 of steel carries in relief on the surface thereof the mark which is to be impressed in intaglio on the objects. 'The said objects are placed on a. support 2 resting on rollers 3 disposed in the bed of a member 4.

The object to be marked being placed on the support 2, the die 1 bears on the said object and by the pressure to which it is subjected, the relief of the roller commences to penetrate the metal. During partial rotation of the die, the marking is continued under the best conditions'required since the table 6 of the die 1 constitutes a movable bearing surface and the support 2, the object to be marked and the roller 1 constitute a fixed assembly during the entire operation.

Furthermore the support 2 can be given an inclination corresponding to the angle formed by the object itself, such as a knife blade for example, and it follows that the marking takes place in symmet ical fashion and horizontal without any possible deformation of the letters or signs, the penetration of the relief of the design in the metal being limited at the surface of the table.

According to Fig. 2, the die sector carrying the design 7 in relief, which design is engraved on the table 6, is destined to mark the blades of knives. The marking machine is provided with an arm at the extremity of which is fixed the sector 1. l hen the pressure is exerted on said arm, it produces a displacement to the left of member 4, which displacement is produced by partial rotation of the roller.

The knife blade 8 is placed on the support 2 and the die commences its movement. By the pressure exerted, the starting of the design in relief penetrates the metal along the line aZ and down to the bottom of the relief, that is to say, that the table 6 of the sector 1 rests on the surface of the object itself. At this instant, the blade 8 of the knife which is-of slightly tapered section be comes displaced along its longitudinal plane due to support 2 which becomes inclined in such wise as to present a slightly inclined surface in the direction of the point. The engraving of the design penetrates the blade in proportion to the amount of partial rotation up to the line ab. This movement causes the member a to slide from the right to the left and a return spring causes it to be brought back to its starting point.

The principal characteristic of the invention resides in the fact that the mark is impressed in the metal in a thorough fashion clear to the bottom of the engraving since the table 6 of the die 1 rests on the surface of the object to be marked during the whole operation. Furthermore, the die maintains the support in perfect equilibrium due to the supporting table thereof.

WVhile I have disclosed what I deem to be the preferable form of my device I do not wish to be limited thereto as there might be various changes made in the construction and arrangement of parts without departing from the spirit of my invention as comprehended within the scope of the appended claims.

Having described my invention What I claim as new and desire to secure by Letters Patent is:

1. A device for marking cutlery and analogous articles comprising an arcuate die, a die plate for said die, said die plate having a semicircular recess, a plurality of semicircularly disposed balls in said recess, and a corresponding semicircular press plate frictionally engaging said balls.

2. A device for marking cutlery and analogous articles comprising an arcuate die, a die plate for said die, a press plate for said die plate for receiving the material to be stamped and a plurality of semicircularly disposed balls interposed between said .press plate and said die plate.

In testimony whereof I hereunto afiix my signature.

MARCEL BRUGIERE. 

